Reliable DDX User Manual

Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523
Model DDX
Single Interlock Preaction Systems
2” (50 mm), 2½” (65 mm), 3” (80 mm),
76 mm, 4” (100 mm), 6” (150 mm),
165 mm & 8” (200 mm)
Bulletin 749 January 2021
Bulletin 749 January 2021
Instructions for Installation,
Operation, Care, and
Maintenance
Wet Pilot Line,
Dry Pilot Line, and
Electric Actuation Trims
• Electric Release Trim Available with 175 psi (12.1
bar) or 300 psi (20.7 bar) Rated Solenoid Valve
• Electric Release Trim and Wet Pilot Trim Utilizing 7
to 10 psi (0.5 to 0.7 bar) Pneumatic Supervising
Pressure
• Dry Pilot Trim Utilizing 8 psi to 28 psi (0.6 to 1.9
bar) Pneumatic Supervising Pressure
• Externally Resettable Clapper
• One Main Drain
Model DDX Single Interlock Preaction
(Shown with Electric Actuation Trim)

Reliable DDX Specifications

General

Brand	Reliable
Model	DDX
Category	Water System
Language	English

Summary

General System Overview

Model DDX Deluge Valve

The central component of the preaction system.

Wet Pilot Line Preaction Systems

Description of a system type.

Electric Actuation Preaction Systems

Description of a system type.

Preaction System Types and Operation

Dry Pilot Line Preaction Systems

Description of a system type.

Listings and Approvals

Crucial compliance and certification information.

Wet Pilot Line System Operation

Details on wet pilot system function.

Electric Actuation System Operation

Details on electric actuation system function.

System Operation and Testing

Pressurizing Line Connection

How to connect the system for pressure.

Hydrostatic Testing Procedures

Critical safety and compliance test.

System Design and Requirements

System Design Considerations

Factors for system installation.

System Air Pressure Requirements

Essential operational parameters.

System Electrical Requirements

Electrical aspects of the system.

Component Specifications

Solenoid Valve Specifications

Details on solenoid valves used.

Engineering Specification Overview

Detailed system requirements.

System Configuration Options

Pneumatic Pressure Supply Options

How to supply air/nitrogen.

Nitrogen Supply

Alternative supply method.

Optional System Accessories

Additional components.

Technical Data and Dimensions

Flange and Connection Data

Technical specifications for connections.

Valve Shipping Weight

Practical information for installation.

Model DDX Valve Pressure Ratings

Critical pressure specifications.

Performance and Maintenance Procedures

Hydraulic Friction Loss Data

Information on pressure drop.

Trim Configurations

Overview of available trim types.

General Maintenance Guidelines

Routine care for the system.

Resetting the Deluge Valve System

Critical operational procedure.

Deluge Valve Maintenance and Repair

Deluge Valve Maintenance Procedures

Routine upkeep and troubleshooting.

Deluge Valve Repair Procedures

Steps for fixing valve issues.

Pushrod Chamber Maintenance

Model DDX Pushrod Chamber Care

Specific maintenance for the pushrod chamber.

Dry Pilot Line Actuator Details

Actuator Parts List

Components of the dry pilot actuator.

Actuator Maintenance

Servicing the dry pilot actuator.

Valve Configuration Details

DDX Valve with Screw-In Seat

Specific valve seat configuration.

Deluge Valve Parts List (Screw-In Seat)

Model DDX Parts Breakdown

Detailed list of parts for the valve.

Ordering and Service Information

Ordering Information Guide

How to specify and order systems.

Service Kits Availability

Information on available service kits.

Installation Dimensions - Wet Pilot Trim

DDX Valve Wet-Pilot Trim Dimensions

Physical installation measurements.

Installation Dimensions - Dry Pilot Trim

DDX Valve Dry-Pilot Trim Dimensions

Physical installation measurements.

Installation Dimensions - Electric Release Trim

DDX Valve Electric Release Trim Dimensions

Physical installation measurements.